Emotions play a crucial role in an animal's life because they facilitate responses to external
or internal events of significance for the organism. In social species, one of the main …

The field of animal vocal communication has benefited greatly from improved understanding
of vocal production mechanisms and specifically from the generalization of the source–filter …

Literature Cited to accompany Animal Communication, 2e Page 1 Principles of Animal
Communication, Second Edition Jack W. Bradbury and Sandra L. Vehrencamp Chapter 14 …

Animals often use acoustical cues, such as formant frequencies, to assess the size of
potential mates and rivals. Reliable vocal cues to size may be under sexual selection. In …

Recent studies have revealed that some mammals possess adaptations that enable them to
produce vocal signals with much lower fundamental frequency (F 0) and formant frequency …

Beaked whale echolocation signals are mostly frequency-modulated (FM) upsweep pulses
and appear to be species specific. Evolutionary processes of niche separation may have …

Surprisingly little is known about the role of acoustic cues in mammal female mate choice.
Here, we examine the response of female red deer (Cervus elaphus) to male roars in which …

In many primates, including humans, the vocalizations of males and females differ
dramatically, with male vocalizations and vocal anatomy often seeming to exaggerate …

In vocal communication, the mechanisms of sound production are well understood. The
length of the vocal folds determines the minimum fundamental frequency, while the size and …

Background Models of honest advertisement predict that sexually selected calls should
signal male quality. In most vertebrates, high quality males have larger body sizes that …